One of our favorite demonstrations at this year’s TED Conference was by computer scientist Abe Davis, who showed us that the tiny vibrations in seemingly still objects can provide very valuable information. Using high-speed cameras—and even a few regular DSLRs—to film stationary items, Davis and his team of engineers were able to recreate the sounds affecting those objects by analyzing their subtle movements. Davis takes it a step further by demonstrating how we can translate this technology into understanding the constantly buzzing world around us. Watch the full keynote on TED.